The GXT4-1000RT120N is a true on-line UPS that delivers continuous, high-quality AC power to IT equipment with no break when transferring to battery. It includes an IS-UNITY-SNMP Communications Card. It also protects equipment from virtually all power disturbances due to blackouts, brownouts, sags, surges or noise interference. These Liebert GXT4 UPS models provide industry leading features in a compact design.